Carbonation mechanism



FIG. 1 is a front, left side, top perspective view of a carbonationmechanism showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a back elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan thereof.

The broken lines shown portions of the carbonation mechanism that formno part of the claimed design.

CLAIM The ornamental design for a carbonation mechanism, as shown anddescribed.